Pneumatic rivet passer



sept. 17,' 1929. w. L; 'GRAY 1,728,605

PNEUMATIC RIvET PASSER Fil-qd Jan 8i 1927 M20 line II-II, Fig. 4;

Patented Sept. 17, 1929 e WILLIAM L. GRAY, `oEfNonrrH WEYMQUTH,MASSACHUSETTS, .assIeNoR 'ro ,mamme-.

f A A e .HEM SVH'r11/BUI',LDINGy oonPoRAnoN f rNELUMATIC RIVE: iASsEn/Application sled January ys, (1927'. 7 s'er'iaieNo. 159,351, v

My 'invention relates to new yand useful neumatic rivet passers.

improvements in The primary ob]ect of thisr invention is to provide anovel form of pneumatic rivet .5. passer which yis rugged in structure,cheap and easily manufactured and which contains a minimumnumber ofparts. In al broader aspect my invention rivet'passer of the cylindricatype,'whch le. ,is adaptedto be inserted directly in the rair line randattached to the forge where'rivets are heated.

The" novel featuresy of m invention will be more fully ,understood romthe following description and claims taken with the accompanyingdrawingsin which:

Fig. 1 is a sideelevation of the apparatus embodyingfmy invention;

Fig. 2 is a crosssectional viewtaken on Fig. 3 is a side elevationof the`rivet passer; yand e t f Fig. 4 is a kcross-sectional view taken online IV-IV of Fig. 3. y. y'

Referring to the drawing 1() designates ay forge of 'any suitableconstructionffor heating rivets. The body 11 of 'therivet passerisprovided with afbracket '12 ,bifur-k cated at itsf'end `to straddlethe 'wall of the 3o pan ofthe forge and is clamped thereto'by means of`the screw 13 threaded rkto ythe bracket." Thebody llisprovided wi-th a"cylindricalchamber 14 aty its lower end and a passageway 15, which ispreferably rectanjy gular iny cross section and open to chamber disposedelongated opening 16, of Suchproportion that a rivet blank may freelypass therethrough intothe chamber 14. A vseat 4o' 17 is formed` on theexterior k,surface of the body 11 andterminatesat a shoulder v18 torotatably support on outer casing y19k mounted on said body. The outercasing`19 has formed in its wall `'an elongated opening 20 ofsubstantially the same kdimensionsias the opening 16, and yso positionedwith respect to each other that their respective axes coincide when theopening 20 isplaced in registry with the opening 16, yas hereinafter setforth. Acircular row of teeth rtains to a 14. The body/11 is providedwith aflate'rally are formed at ythe upper end offouter casing 19;toconstitute a. bevelgear'l.

A tapered yvalve seat y22 ,is .bored dialnet? rically c through the `bodc 11 y aty a position approximately midway tween the upper end ofthebody 11 and theY chamber`14,

and is,y adapted to yreceive a rotatable valve plug 23 the 'axis ofwhich is the plane otthefinajor axis of the pas'sxrfgfggewayk 15. The@valve plug 23, is kof a ydiameter materially larger than the widthofthe passageway land isprovided with a'rectangular lateral opening 24which is of cross sectionv substantially the same asy `the passageway15.1k The "end25 of the valveI hi v23 is threaded and'extends beyond Atle ace of theboss 26 formed on the body l11` "A pair ofwnut's and awasher are.v mounted on ,the threaded end 25 r'for the purposefoffdrawing` the valve plug 23 tightly to itsseat 22.y In

order to rotate l'thevalve:plugl I provide an operating handle 27 having"a square yaperture receptive of ythe end 28ky of valvey plugQBgSuitable means is providedto retain 'thehandl'e`27 in fixed Vrelationto the valve lug' 23and ,for this purpose I show a mac ine screw 29threadedin. the end of the latterand a washer 30 mounted thereonintermediate the headof said screw and the handle 27. 'By rotating theValve plug 23,

through the medium ofthe helnrdle'QZ,- the opening 24fmay 'be placed inregistry with passageway' 15,y so that compreed air may pass reelthrough ythe`paageway 15 to they cham c1114, kas hereinafter described.In the preferred embodiment of my invention,y when said openings andsaid passage# way are in alignment, the handleis L,set in a horizontalposition and when, ythe latter is turned to a. vertical position theopening is disposed atright' angles to the vertical axis of 'thepassageway v15` whereby the, imperforate surfaceof the kvalve plug.prevents the passage of the air tothe harnber14.

` Integral ywith the handle 27 isa bevel gear segment 31 which kmesheswith the gear 21 so that, upon rotation ofthe handle the outer casing 19is caused to rotate uponits seat in ses` unisoniwith the valveplug'23.,y The handle 27 is arrangedangularly with respect to theposition of the outer casing 19 so that when the opening 24 in the valveplug 23 is at right angles to the passageway 15 the openings 2O and 16in the outer casing 18 and the body 11 respectively are in registry.lhen my device is inthis latter position a rivet blank may bereelypassed to the chamber 14. v The upper end of the body 11 is boredcentrallyy and threaded to receive the nipple 32 of a hose r33l in ordertov connectthe upper vend ot the passageway 15 with a source otcompressed air supply. The lower end ofthe body 11 is threaded toreceive a coupling 34 ot' a conduit 35 for the purpose ot conveying therivet to a distant known to the art, p

'In operation, assuming the handle 27 to be in a vertical position,compressed air is contained within hose 33 and the openings 20 and 16are in registry, a.y heated rivet is placed in the chamber 14. Byturning the handlethrough approximately 900 the opening 24 inthe valveplug 23 is aligned with the passageway 15, lthus allowing the comlpressed'air to .pass to the chamber 14; simultaneously, fdue tothemeshing gears 31 and 21,- theV outer casing 19 is rotated so that theimpertorate wallvof said casing closes the opening 16. By closing thelatter openingthe egress of the compressed air is prevented andthe fulltorce of lthe air is eRecti'veto propel the rivet through the conduit 35to point of use. Upon turning the handle tol its' original position theair is shut ott" and the chamber 14 is ope'nedr'forv the reception ofthe nextrivetto be passed.

yF rom the foregoing it will be clearly seen that ll have devised' arivet passer which vis simple in construction, notvliable to get out oforder, and the parts of which are easily accessible for adjustment orreplacement.

And, furthermore, with adevice of the character described a singlemovement by the operator effectsxthe operation thereof.

While I have shown my invention inbut one form, it will be obvious tothosel skilled in the 'arti that it is lnot sollimited, but issusceptible of various other changes and modifications without departingfrom the K spirit thereof,- and I' desire, therefore, that onlyfsuchlimitations shall be placed thereupon as areimposed by the prior art oras are speciiically set forth in the appended claims..

' Having thus described my inventionV Awhat I claim as new anddesire tosecure by Letters Patent is:

1f A'y rivet passer, comprising a hollow body,`an outer' casingrotatably mounted on said b`ody,the outer casing having' a bevelgearmounted thereon, a rotary valve in said body having a gearmountedthereon and in mesh with the gear of the outer casing, and meansto rotatethe valve. i

2.rk A. rivet passer,comprising a body having a normally open chamberfor receiving.

point, in a manner'well closes said chamber and the rotation orn saidvalve to closed position opens said chamber.

3. A rivet passer, comprising a hollow body having an aperture formedtherein for receiving rivets, an outer casing mounted on said bodyhaving an opening formed therein, a gear mounted on said casing, a'rotary valve having a gear mounted thereon in meshed relation with lthefirst mentioned gear, and a handle adapted to simultaneously rotate saidgears. Y

4, A rivet passer, comprising a hollow body member, an outer casingmember, said members having rivet receiving openings iormed therein,said casing being rotatably mounted on said body in order to bring theopenings into and out ot registry with each other, a rotatable valvecontrolling the admission of compressed air to within said body, andmeans including gearing disposed between the casing and said valve,adapted to simultaneously rotate the-valve and the outer casing, Y i

5. A rivet passer, comprising a body member, a closure member having agear iounted thereon, said members having rivet receiving openings, oneof said members being turnable relative to the other to bring theopenings into and out of registry, a valve housing providedk with an airpassage, a rotatable valve the valve housing adapted to. close the airpassage, and a handle connected to said valve and having a gearzintegraltherewith, said 'gear meshing with thei'irst mentioned gear whereby`movement ot the handle causes the valve and the turnable casing torotate in unison.

. 6. A rivet passer, comprising a. bodv having a rivet receivingchamberformed therein and having a lateral opening formed in i its wall, anouter casing rotatably mounted on said bodyv adapted to open and closesaidy opening, said body having a passageway communicating with saidchamber, a rotatable valve for opening or closing said passageway, agear on the outer casing, agear on said valve in mesh with theiirstmentioned gear, and means to rotate said valve.

7. ln a rivet passer, a hollow body having a lateral opening formedtherein, an outer vcasing rotatably mounted on said bodv havin@ alateral opening formed therein, ak conduit tor conveying Huid underpressure to within said body, a rotatable valve for preventing orpermitting ther passage of said` fluid, a gear on the outer casing and agear on said valve in mesh with the irstanentioned gear, whereby therotation of said valve rotates said outer easing so that when said valveis moved to its open position said lateral opening is Closed by saideasingr and when said valvel is moved to its closed position saidlateral openings are in registry to permit the passage of a rivet towithin said body. f

8. A rivet passer, comprising' a hollow body, an outer easingI rotatablymounted on said body, the outer casing having a. bevel gear mountedthereon, a rotary valve in said body having` a gear mounted thereon andin mesh with the gear of the outer easing,

and means including said gearing to rotate the outer easing.

In testimony whereof I hereunto aiix my signature.

WILLIAM L. GRAY.

